题型:解答题-问答题
难度:0.4
引用次数:2797
题号:5220887
如图,曲线
由上半椭圆
和部分抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4003e374b4407bc34b8d3c093344b2e7.png)
连接而成,
的公共点为
,其中
的离心率为
.
![](https://img.xkw.com/dksih/QBM/2015/10/16/1572259192193024/1572259197829120/STEM/ff24a355add64198837120c918f48cf5.png)
(Ⅰ)求
的值;
(Ⅱ)过点
的直线
与
分别交于
(均异于点
),若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56491aa0496fdd06a911f2b2aedebb97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4003e374b4407bc34b8d3c093344b2e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185cc560d3ba99355828351f46284840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://img.xkw.com/dksih/QBM/2015/10/16/1572259192193024/1572259197829120/STEM/ff24a355add64198837120c918f48cf5.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(Ⅱ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d94dcc49f197bc7183be7b187ff4eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
更新时间:2017-07-25 07:39:10
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【推荐1】已知椭圆
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(1)求椭圆
的标准方程;
(2)设过点A且斜率为
的动直线与椭圆
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,
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:
于异于点
的点
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,设直线
的斜率为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设过点A且斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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【推荐2】已知点
关于直线
的对称点是
,焦点在
轴上的椭圆经过点
,且离心率为
.
(1)求椭圆的方程;
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满足
,直线
分别交椭圆于
.探求直线
是否过定点,如果经过请求出定点的坐标,如果不经过定点,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e43aea21c14ad91066a0b1baa941911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6342e0a5a8942cfb1cf535ceb2c50d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆的方程;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d141d6849a689e6c20b5b91a32ae11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aabac9984f5bd677aa49cf567e26ff5.png)
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【推荐1】在平面直角坐标系xOy中,已知椭圆C:
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(1)求椭圆C的标准方程;
(2)已知点D
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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【推荐1】设椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7f419748d589210eec0aa936faa8cc.png)
的左右焦点分别为
,离心率为
,点
在椭圆上,且
的面积的最大值为
.
(1)求椭圆
的方程;
(2)已知直线
与椭圆
交于不同的两点
两点,若在
轴上存在点
,使得
,求点
的横坐标的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7f419748d589210eec0aa936faa8cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d5abb3665aca204b7c5c0c6664a0e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122ba80be450e578bef55b932232e884.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59eae4b1eb84ff8c98badde56c3bca3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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【推荐2】已知椭圆
的短轴长为
,离心率为
.
(1)求椭圆
的标准方程;
(2)设椭圆
的左,右焦点分别为
,
左,右顶点分别为
,
,点
,
,为椭圆
上位于
轴上方的两点,且
,记直线
,
的斜率分别为
,
,若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/014fb9d469a4b0b8a907ac416ad13585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67bee78e4e358531389b3aad07e70bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb84f6fbac102ccf326b2223d69cb7cc.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09a8ac969e5cec3be6abf4ff44c692e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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